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Query: UMLS:C0020538 (hypertension)
 170,190 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In forty patients with mild to moderate essential hypertension correlation between serum uric acid as well as renal excretion of urate and the transport of uric acid in nephron was evaluated. Quantity of the separate phases of uric acid transport in nephron was calculated based upon pharmacological tests with pyrazinamide and benzbromarone. The results obtained in twenty normotensive subjects were assumed to be a normal values. Positive correlation between serum uric acid and presecretory reabsorption of urate was found in hypertensive patients. However presecretory reabsorption of urate did not significantly differ between hypertensive patients with concomitant hyperuricemia and normotensive subjects. Tubular secretion of uric acid was significantly lower in hypertensive patients in comparison with normotensive subjects. Plasma uric acid correlated inversely++ with tubular secretion of urate in patients with essential hypertension. There was no difference in postsecretory reabsorption of uric acid between the groups. Plasma uric acid did not correlate with postsecretory reabsorption of urate in hypertensive patients. These findings suggest that decreased uric acid clearance in hypertension with concomitant hyperuricemia is connected with impaired tubular secretion of urate.
Pol Arch Med Wewn 1991 Sep
PMID:[Uric acid and arterial hypertension. II. Evaluation of uric acid transport in the nephrons in primary arterial hypertension]. 180 1

In 64 kidney transplant patients (KTP) (35) treated by cyclosporine A (CyA)+ prednisone and 29 treated by azathioprine (Aza)+ prednisone and promethazine and in 15 healthy subjects plasma adrenalin (A), noradrenaline (NA), plasma renin activity (PRA) and mean arterial pressure (MAP) in basal conditions and after water immersion test (WI) were measured. In basal conditions the A and PRA were higher, but NA was normal. After WI statistically significant decrease of MAP, PRA, A and NA were observed in all examined groups. In KTP mean decrease MAP, PRA and A was higher, but NA lower than in normals. No significant correlation between A or NA and PRA, and MAP and A or NA was observed. In KTP the change in sympathetic+ activity was observed. Participation of catecholamines and renin in the pathogenesis of hypertension in KTP is not dominant. Kind of immunosuppressive therapy (CyA or Aza) haven't significant influence on A, NA nad PRA levels.
Pol Arch Med Wewn 1991 Oct
PMID:[Plasma levels of adrenaline and noradrenaline, plasma renin activity and arterial blood pressure in patients after kidney transplantation]. 181 78

The objective of this work is to present the methodology and basic results of epidemiological studies, which facilitate the evaluation of risk of death from cardiovascular diseases in males of working age, exposed to risk factors related to this group of diseases, in comparison with females. The results revealed that in Poland, social and stressogenic factors determining strong negative life-styles play a significant part in shaping male mortality. These factors, acting in combination with high rates of hazards such as smoking, arterial hypertension, obesity and diabetes, significantly increase mortality from cardiovascular diseases.
Pol J Occup Med Environ Health 1991
PMID:The risk of death from cardiovascular diseases in the male population of working age in Poland. II. Epidemiological observations and basic results. 181 41

A case is presented of a 74 years old man with systemic hypertension, congestive heart failure and history of heart infarction in the past. The physical findings revealed: blood pressure - 130/80 mmHg, arrhythmia and symptoms of congestion in systemic and pulmonary circulation. Ecg tracing showed multifocal atrial rhythm about 90 bpm., very low QRS voltage and lack of R waves in precordial V1-V4. On autopsy an enormous enlargement of the whole heart (1005 g) was found. Microscopical investigation revealed abundant amyloid deposits in the muscle of atria, ventricles and sinus node, disseminated atheromatous changes in the coronary system with no critical narrowing (more than 75% of lumen area). No sings of healed infarct were find. This is the first published case of so called "the king of hearts" due to amyloidosis.
Pol Arch Med Wewn 1991 May
PMID:[Heart amyloidosis with enormous cardiomegaly ("the king of hearts")]. 183 55

Left ventricular hypertrophy in arterial hypertension occurs in over 50% of patients. The detection of such high incidence has been facilitated by the introduction of echocardiography into diagnostic studies. Both earlier electrocardiographic findings and later echocardiographic results show that cardiac hypertrophy leads to an increased mortality and predisposes to cardiac arrhythmias, ischemic heart disease including myocardial infarction and heart failure. The development of hypertrophy is mediated by hemodynamic factors such as elevated blood pressure due to increased peripheral vascular resistance, ejection fraction, increased cardiac output, blood viscosity, as well as by non-hemodynamic factors. Of the latter ones the contribution of a genetic factor is discussed, whereas the role of para- and autocrine cardiac function manifested by local production and action of catecholamines as well as the renin-angiotensin system has been proved. Blockade of these systems makes possible prevention of the development of cardiac hypertrophy or its regression. Such results have been obtained both in experimental studies and in humans with hypertension treated with selected drugs. Regression of hypertrophy is accompanied by an improvement in systolic and especially diastolic cardiac function, the impairment of which is usually diagnosed prior to the detection of hypertrophy. The improvement in cardiac function and possibility of preventing consequences of hypertrophy help us to evaluate the efficacy of hypotensive drugs and their preferential use in this regard. There are also changes in recently recommended models of pharmacological treatment in arterial hypertension.
Kardiol Pol 1991
PMID:[Hypertrophy and function of the left heart ventricle in hypertension]. 183 84

Serum lipoprotein(a) concentration in men with hypertension, arteriosclerosis obliterans, hypercholesterolemia and after myocardial infarction was measured using Laurell's immunoelectrophoresis. Lp(a) distribution and mean serum concentrations did not differ significantly from the controls, with the exception of a group of premature myocardial infarction (age below 45), in which high values were more frequent.
Kardiol Pol 1991
PMID:[Lipoproteins (A) after a history of myocardial infarction, arteriosclerosis obliterans, hypertension and hyperlipidemia]. 183 85

In forty patients with essential hypertension correlation between serum uric acid and some clinical features of hypertensive disease i.e. severity and time of duration of arterial hypertension, the extent of vascular, retinal changes and left ventricular wall thickness was evaluated. Results showed that diastolic arterial pressure and the extent of retinal changes are significantly higher in hypertensive patients with concomitant hyperuricemia in comparison with normal uricemia patients with essential hypertension. Positive correlation was found between serum uric acid and diastolic as well as mean arterial pressure. Moreover, patients with essential hypertension and hyperuricemia demonstrated left ventricular hypertrophy in comparison with normal uricemia in hypertensive patients. Elevated serum uric acid in essential hypertension should be regarded as an early "harbinger" of disposition to the quick progress of vascular changes.
Pol Arch Med Wewn 1991 Sep
PMID:[Uric acid and arterial hypertension. IV. Relation between serum uric acid level, the extent of vascular changes and heart enlargement in primary arterial hypertension]. 183 99

The aim of the present study was to compare effects of intravenous infusion of vasopressin AVP and V1 receptors blockade on blood pressure and heart rate in normotensive (WKY) and spontaneously hypertensive (SHR) rats. A 20 min vasopressin infusion (1.2 ng/kg/min) elicited significantly greater increase in mean blood pressure (MP) in SHR than in WKY. Heart rate was significantly reduced in SHR while nonsignificantly in WKY. A 20 min dEt2 AVP (V1 antagonist) infusion (0.5 microgram/kg/min) elicited significant decrease in MP and increase in heart rate (HR) in SHR, but produced no effect in WKY. The data indicate that SHR are more susceptible to pressor and hypotensive effects of sustained elevation of AVP and AVP antagonist. The results support the hypothesis that AVP may contribute to pathogenesis of hypertension.
Pol J Pharmacol Pharm
PMID:Effects of vasopressin and V1 receptors blockade on blood pressure and heart rate in spontaneously hypertensive rats. 184 Mar 31

The aim of the present epidemiological study was to recognize the distribution of blood pressure (BP) and the prevalence of arterial hypertension (AH) in the aged (> or = 70 years) population in Cracow. The data were obtained from the studied group of 512 persons (153 men and 359 women) which corresponds to 72.4% of the randomly chosen group. The mean systolic BP was 159.7 in males and 164.3 mmHg in females (p < 0.05). Diastolic BP was 86.3 mmHg and 87.3 mmHg (n.s.), respectively. We observed the single peaked distribution of BP. According to the WHO epidemiological criteria of AH (BP > or = 160 = 95 mmHg) hypertension was found in 60.6% (49.7% M and 64.8% F) with systolic AH 32.3%, systolic+diastolic in 25.4% and diastolic AH alone in 2.9% of this group.
Mater Med Pol
PMID:Distribution of blood pressure and prevalence of arterial hypertension in the old population of Cracow. 184 76

The aim of the study was to analyse the course of isolated systolic hypertension in old age and its influence upon quoad vitam prognosis. A group of 100 persons over 60 was chosen and observed systematically for the period of 10 years in the geriatric out-patients centre. On the basis of pattern of arterial pressure in the 10-year-period the patients were qualified into several types of hypertension. Isolated systolic hypertension occurred mostly in the late old age over 70 and was characterized by irregular occurrence of periods of hypertension alternately with periods of normotension without any tendency to increase hypertension with the advance of old age. Cases of death caused directly by hypertension were found more frequently in the group with systolic-diastolic hypertension (56%) than in the group with isolated systolic hypertension (36%).
Mater Med Pol
PMID:The dynamics of isolated systolic hypertension during the 10-year period of geriatric treatment. 184 77


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